The Maize Floral Transition

2009 ◽  
pp. 41-55 ◽  
Author(s):  
Joseph Colasanti ◽  
Michael Muszynski
Keyword(s):  
Floral Transition

scholarly journals Simple network motifs can capture key characteristics of the floral transition inArabidopsis

2013 ◽  
Vol 8 (11) ◽  
pp. e26149 ◽  
Author(s):  
Nick Pullen ◽  
Katja E Jaeger ◽  
Philip A Wigge ◽  
Richard J Morris
Keyword(s):  
Floral Transition ◽  
Network Motifs ◽  
Key Characteristics ◽  
Simple Network

DhEFL2, 3 and 4, the three EARLY FLOWERING4-like genes in a Doritaenopsis hybrid regulate floral transition

2015 ◽  
Vol 34 (12) ◽  
pp. 2027-2041 ◽  
Author(s):  
Weiwei Chen ◽  
Qiaoping Qin ◽  
Chi Zhang ◽  
Yongping Zheng ◽  
Chun Wang ◽  
...  
Keyword(s):  
Floral Transition ◽  
Doritaenopsis Hybrid

Floral transition in maize infected with Sporisorium reilianum disrupts compatibility with this biotrophic fungal pathogen

Planta ◽  
2013 ◽  
Vol 237 (5) ◽  
pp. 1251-1266 ◽  
Author(s):  
Shaopeng Zhang ◽  
Jack Gardiner ◽  
Yannong Xiao ◽  
Jiuran Zhao ◽  
Fengge Wang ◽  
...  
Keyword(s):  
Fungal Pathogen ◽  
Floral Transition ◽  
Sporisorium Reilianum

scholarly journals TEM1 combinatorially binds to FLOWERING LOCUS T and recruits a Polycomb factor to repress the floral transition in Arabidopsis

2021 ◽  
Vol 118 (35) ◽  
pp. e2103895118
Author(s):  
Hongmiao Hu ◽  
Shu Tian ◽  
Guohui Xie ◽  
Rui Liu ◽  
Nana Wang ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Molecular Basis ◽  
Floral Transition ◽  
Flowering Locus T ◽  
Dna Binding Domains ◽  
Adult Transition ◽  
Binding Domains ◽  
Flowering Locus ◽  
Specific Regulation

Arabidopsis TEMPRANILLO 1 (TEM1) is a transcriptional repressor that participates in multiple flowering pathways and negatively regulates the juvenile-to-adult transition and the flowering transition. To understand the molecular basis for the site-specific regulation of FLOWERING LOCUS T (FT) by TEM1, we determined the structures of the two plant-specific DNA-binding domains in TEM1, AP2 and B3, in complex with their target DNA sequences from the FT gene 5′-untranslated region (5′-UTR), revealing the molecular basis for TEM1 specificity for its DNA targets. In vitro binding assays revealed that the combination of the AP2 and B3 binding sites greatly enhanced the overall binding of TEM1 to the FT 5′-UTR, indicating TEM1 combinatorically recognizes the FT gene 5′-UTR. We further showed that TEM1 recruits the Polycomb repressive complex 2 (PRC2) to the FT 5′-UTR. The simultaneous binding of the TEM1 AP2 and B3 domains to FT is necessary for deposition of H3K27me3 at the FT 5′-UTR and for the flowering repressor function of TEM1. Overall, our data suggest that the combinatorial recognition of FT 5′-UTR by TEM1 ensures H3K27me3 deposition to precisely regulate the floral transition.

scholarly journals Genome-wide identification of the 14-3-3 gene family and its participation in floral transition by interacting with TFL1/FT in Apple

2020 ◽  
Author(s):  
Xiya Zuo ◽  
Shixiang Wang ◽  
Wen Xiang ◽  
Huiru Yang ◽  
Muhammad Mobeen Tahir ◽  
...  
Keyword(s):  
Gene Family ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Floral Transition ◽  
Bimolecular Fluorescence Complementation ◽  
Pcr Analysis ◽  
Transcriptional Responses ◽  
Genome Database ◽  
Reverse Transcription Pcr ◽  
Conserved Core

Abstract Background: Apple (Malus domestica Borkh.) is one of the most popular cultivated fruit crops in China. Apple floral transition is an important process but liable to be affected by various environmental factors. The 14-3-3 proteins are involved in regulating diverse biological processes in plants, and some 14-3-3 members play vital roles in flowering. However, little information was available about the 14-3-3 members in apple.Results: In the current study, we identified eighteen 14-3-3 gene family members from the apple genome database, designated MdGF14a to MdGF14r. The isoforms possess a conserved core region comprising nine antiparallel α-helices and divergent N and C termini. According to their structural and phylogenetic features, Md14-3-3 proteins could be classified into two major evolutionary branches, the epsilon (ɛ) group and the non-epsilon (non-ɛ) group. Moreover, expression profiles derived from transcriptome data and quantitative real-time reverse transcription PCR analysis showed diverse expression patterns of Md14-3-3 genes in various tissues and in response to different sugars and hormone treatments during the floral transition phase. Four Md14‑3-3 isoforms (MdGF14a, MdGF14d, MdGF14i, and MdGF14j) exhibiting prominent transcriptional responses to sugars and hormones were selected for further investigation. Furthermore, yeast two-hybrid and bimolecular fluorescence complementation experiments showed that the four Md14-3-3 proteins interact with key floral integrators, MdTFL1 (TERMINAL FLOWER1) and MdFT (FLOWERING LOCUS T). Subcellular localization of four selected Md14-3-3 proteins demonstrated their localization in both the cytoplasm and nucleus.Conclusion: We identified the Md14-3-3s family in apple comprehensively. Certain Md14-3-3 genes are expressed predominantly during the apple floral transition stage, and may participate in the regulation of flowering through association with flower control genes. Our results provide a preliminary framework for further investigation into the roles of Md14-3-3s in floral transition.

scholarly journals Comparative transcriptomics identifies differences in the regulation of the floral transition between Arabidopsis and Brassica rapa cultivars

2020 ◽  
Author(s):  
Alexander Calderwood ◽  
Jo Hepworth ◽  
Shannon Woodhouse ◽  
Lorelei Bilham ◽  
D. Marc Jones ◽  
...  
Keyword(s):  
Gene Expression ◽  
Brassica Rapa ◽  
Regulatory Networks ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Gene Expression Profiles ◽  
Detailed Comparison ◽  
Developmental Time ◽  
Floral Transition ◽  
Gene Regulatory

AbstractThe timing of the floral transition affects reproduction and yield, however its regulation in crops remains poorly understood. Here, we use RNA-Seq to determine and compare gene expression dynamics through the floral transition in the model species Arabidopsis thaliana and the closely related crop Brassica rapa. A direct comparison of gene expression over time between species shows little similarity, which could lead to the inference that different gene regulatory networks are at play. However, these differences can be largely resolved by synchronisation, through curve registration, of gene expression profiles. We find that different registration functions are required for different genes, indicating that there is no common ‘developmental time’ to which Arabidopsis and B. rapa can be mapped through gene expression. Instead, the expression patterns of different genes progress at different rates. We find that co-regulated genes show similar changes in synchronisation between species, suggesting that similar gene regulatory sub-network structures may be active with different wiring between them. A detailed comparison of the regulation of the floral transition between Arabidopsis and B. rapa, and between two B. rapa accessions reveals different modes of regulation of the key floral integrator SOC1, and that the floral transition in the B. rapa accessions is triggered by different pathways, even when grown under the same environmental conditions. Our study adds to the mechanistic understanding of the regulatory network of flowering time in rapid cycling B. rapa under long days and highlights the importance of registration methods for the comparison of developmental gene expression data.

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